Segmentation fault: 11 when attempting to codesign .app

Question

I haven\'t been able to find a definition for this error in relation to codesigning. I\'m really quite stumped as of what to do.

The error occurs when attempting to exec

Answer 1

I've encountered this in Xcode 8.3.2 when I inadvertently wound up with duplicates of my signing certificates. @kristina's answer gave me the clue; $ security find-identity -v showed me two entries with identical hashes. I fixed it by deleting the first certificate in the list with that hash, via:

$ sudo security delete-certificate -Z